public transport provided by a line of railway cars coupled together and drawn by a locomotive

a sequentially ordered set of things or events or ideas in which each successive member is related to the preceding

a procession (of wagons or mules or camels) traveling together in single file

a series of consequences wrought by an event

piece of cloth forming the long back section of a gown that is drawn along the floor

wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed